I have been reading a lot about the arduino with hopes of making a large spectrum analyzer on a table. I found the Bliptronics post in the read-only forum and purchased the Pixel LED's and shield.

I know the LED's work, cause the pattern code for them lights everything up as it should. However, the Spectrum code will light up the first 5 LED's a light blue, and a random 10 or so near the end of the 50 LED strip will flick on and off bright white.

//For spectrum analyzer shield, these three pins are used.//You can move pinds 4 and 5, but you must cut the trace on the shield and re-route from the 2 jumpers. int spectrumReset=5;int spectrumStrobe=4;int spectrumAnalog=0; //0 for left channel, 1 for right.

//This holds the 15 bit RGB values for each LED.//You'll need one for each LED, we're using 25 LEDs here.//Note you've only got limited memory, so you can only control //Several hundred LEDs on a normal arduino. Double that on a Duemilanove.

The audio in the video is from the headphones jack on my PC. I've also used an iPhone which has no additional result. In the section of the video where I shut the music off, it looks like that regardless of audio input. 7 blue lights, and the funky white pattern near the end of the strip.

It strikes me as odd considering there is a section in the code to shut all LED's off.

It works great now. He then had some fun tweaking the level adjust to come back up and down at a faster rate. Then added an idle sequence for no input. No code on that yet, but will post once all is set.